@serenity-js/core/lib/io/commaSeparated.js

The core Serenity/JS framework, providing the Screenplay Pattern interfaces, as well as the test reporting and integration infrastructure

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.commaSeparated = commaSeparated;
/**
 * Produces a comma-separated list based on the list provided.
 *
 * @param list
 * @param mappingFunction
 * @param [acc='']
 *
 * @returns {string}
 */
function commaSeparated(list, mappingFunction = item => `${item}`.trim(), acc = '') {
    switch (list.length) {
        case 0: return acc;
        case 1: return commaSeparated(tail(list), mappingFunction, `${acc}${mappingFunction(head(list))}`);
        case 2: return commaSeparated(tail(list), mappingFunction, `${acc}${mappingFunction(head(list))} and `);
        default: return commaSeparated(tail(list), mappingFunction, `${acc}${mappingFunction(head(list))}, `);
    }
}
/** @package */
function head(list) {
    return list[0];
}
/** @package */
function tail(list) {
    return list.slice(1);
}
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